| Message ID | 20190918173141.4314-2-krzk@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2,1/8] dt-bindings: rng: exynos4-rng: Convert Exynos PRNG bindings to json-schema | expand |
On Wed, Sep 18, 2019 at 07:31:35PM +0200, Krzysztof Kozlowski wrote: > Convert generic mmio-sram bindings to DT schema format using > json-schema. I've been slow getting to this because I started on the same thing... > > Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> > > --- > > Changes since v1: > 1. Indent example with four spaces (more readable). > --- > .../devicetree/bindings/sram/sram.txt | 80 ---------- > .../devicetree/bindings/sram/sram.yaml | 138 ++++++++++++++++++ > 2 files changed, 138 insertions(+), 80 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/sram/sram.txt > create mode 100644 Documentation/devicetree/bindings/sram/sram.yaml > diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml > new file mode 100644 > index 000000000000..8d9d6ce494b2 > --- /dev/null > +++ b/Documentation/devicetree/bindings/sram/sram.yaml > @@ -0,0 +1,138 @@ > +# SPDX-License-Identifier: GPL-2.0 > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/sram/sram.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Generic on-chip SRAM > + > +maintainers: > + - FIXME <who@should.it.be> You can put me. > + > +description: |+ > + Simple IO memory regions to be managed by the genalloc API. > + > + Each child of the sram node specifies a region of reserved memory. Each > + child node should use a 'reg' property to specify a specific range of > + reserved memory. > + > + Following the generic-names recommended practice, node names should > + reflect the purpose of the node. Unit address (@<address>) should be > + appended to the name. > + > +properties: > + $nodename: > + pattern: "^sram(@.*)?" > + > + compatible: > + items: > + - enum: > + - mmio-sram > + - atmel,sama5d2-securam I was trying to go down the path of putting all the compatibles for various SRAM bindings here, but I ran into some issues. I need to revisit as I've forgotten the exact issue. This would need to be a 'contains' if this is going to work for others. > + > + reg: > + maxItems: 1 > + > + "#address-cells": > + description: Should use the same values as the root node. > + > + "#size-cells": > + description: Should use the same values as the root node. I defined both of these to be 1 as 4GB of SRAM should be enough for a while. We can debate 1 or 2 cells vs. 1, but there's no reason it has to be the same as the root (unless we're failing to do address translation). > + > + ranges: > + description: > + Should translate from local addresses within the sram to bus addresses. > + > + no-memory-wc: > + description: > + The flag indicating, that SRAM memory region has not to be remapped > + as write combining. WC is used by default. > + type: boolean > + > + # TODO: additionalProperties: false > + > +patternProperties: > + "^([a-z]*-)?sram@[a-f0-9]$": > + type: object > + description: > + Each child of the sram node specifies a region of reserved memory. > + properties: > + reg: > + description: > + IO mem address range, relative to the SRAM range. maxItems: 1 > + > + compatible: > + $ref: /schemas/types.yaml#/definitions/string > + description: > + Should contain a vendor specific string in the form > + <vendor>,[<device>-]<usage> > + > + pool: > + description: > + Indicates that the particular reserved SRAM area is addressable > + and in use by another device or devices. > + type: boolean > + > + export: > + description: > + Indicates that the reserved SRAM area may be accessed outside > + of the kernel, e.g. by bootloader or userspace. > + type: boolean > + > + protect-exec: > + description: | > + Same as 'pool' above but with the additional constraint that code > + will be run from the region and that the memory is maintained as > + read-only, executable during code execution. NOTE: This region must > + be page aligned on start and end in order to properly allow > + manipulation of the page attributes. > + type: boolean > + > + label: > + $ref: /schemas/types.yaml#/definitions/string Already has a type definition. > + description: > + The name for the reserved partition, if omitted, the label is taken > + from the node name excluding the unit address. > + > + clocks: > + description: > + A list of phandle and clock specifier pair that controls the > + single SRAM clock. > + > + # TODO: additionalProperties: false > + > + required: > + - reg > + > +required: > + - compatible > + - reg > + - "#address-cells" > + - "#size-cells" > + - ranges > + > +examples: > + - | > + sram: sram@5c000000 { > + compatible = "mmio-sram"; > + reg = <0x5c000000 0x40000>; /* 256 KiB SRAM at address 0x5c000000 */ > + > + #address-cells = <1>; > + #size-cells = <1>; > + ranges = <0 0x5c000000 0x40000>; > + > + smp-sram@100 { > + compatible = "socvendor,smp-sram"; > + reg = <0x100 0x50>; > + }; > + > + device-sram@1000 { > + reg = <0x1000 0x1000>; > + pool; > + }; > + > + exported@20000 { > + reg = <0x20000 0x20000>; > + export; > + }; > + }; > -- > 2.17.1 >
On Tue, Oct 01, 2019 at 09:00:03AM -0500, Rob Herring wrote: > On Wed, Sep 18, 2019 at 07:31:35PM +0200, Krzysztof Kozlowski wrote: > > Convert generic mmio-sram bindings to DT schema format using > > json-schema. > > I've been slow getting to this because I started on the same thing... > > > > > Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> > > > > --- > > > > Changes since v1: > > 1. Indent example with four spaces (more readable). > > --- > > .../devicetree/bindings/sram/sram.txt | 80 ---------- > > .../devicetree/bindings/sram/sram.yaml | 138 ++++++++++++++++++ > > 2 files changed, 138 insertions(+), 80 deletions(-) > > delete mode 100644 Documentation/devicetree/bindings/sram/sram.txt > > create mode 100644 Documentation/devicetree/bindings/sram/sram.yaml > > > diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml > > new file mode 100644 > > index 000000000000..8d9d6ce494b2 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/sram/sram.yaml > > @@ -0,0 +1,138 @@ > > +# SPDX-License-Identifier: GPL-2.0 > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/sram/sram.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Generic on-chip SRAM > > + > > +maintainers: > > + - FIXME <who@should.it.be> > > You can put me. Sure. > > > + > > +description: |+ > > + Simple IO memory regions to be managed by the genalloc API. > > + > > + Each child of the sram node specifies a region of reserved memory. Each > > + child node should use a 'reg' property to specify a specific range of > > + reserved memory. > > + > > + Following the generic-names recommended practice, node names should > > + reflect the purpose of the node. Unit address (@<address>) should be > > + appended to the name. > > + > > +properties: > > + $nodename: > > + pattern: "^sram(@.*)?" > > + > > + compatible: > > + items: > > + - enum: > > + - mmio-sram > > + - atmel,sama5d2-securam > > I was trying to go down the path of putting all the compatibles for > various SRAM bindings here, but I ran into some issues. I need to > revisit as I've forgotten the exact issue. > > This would need to be a 'contains' if this is going to work for others. OK. > > > + > > + reg: > > + maxItems: 1 > > + > > + "#address-cells": > > + description: Should use the same values as the root node. > > + > > + "#size-cells": > > + description: Should use the same values as the root node. > > I defined both of these to be 1 as 4GB of SRAM should be enough for a > while. We can debate 1 or 2 cells vs. 1, but there's no reason it has to > be the same as the root (unless we're failing to do address > translation). That was copied from txt version. I can adjust them to 1 although this is will more than simple conversion. > > > + > > + ranges: > > + description: > > + Should translate from local addresses within the sram to bus addresses. > > + > > + no-memory-wc: > > + description: > > + The flag indicating, that SRAM memory region has not to be remapped > > + as write combining. WC is used by default. > > + type: boolean > > + > > + # TODO: additionalProperties: false > > + > > +patternProperties: > > + "^([a-z]*-)?sram@[a-f0-9]$": > > + type: object > > + description: > > + Each child of the sram node specifies a region of reserved memory. > > + properties: > > + reg: > > + description: > > + IO mem address range, relative to the SRAM range. > > maxItems: 1 OK > > > + > > + compatible: > > + $ref: /schemas/types.yaml#/definitions/string > > + description: > > + Should contain a vendor specific string in the form > > + <vendor>,[<device>-]<usage> > > + > > + pool: > > + description: > > + Indicates that the particular reserved SRAM area is addressable > > + and in use by another device or devices. > > + type: boolean > > + > > + export: > > + description: > > + Indicates that the reserved SRAM area may be accessed outside > > + of the kernel, e.g. by bootloader or userspace. > > + type: boolean > > + > > + protect-exec: > > + description: | > > + Same as 'pool' above but with the additional constraint that code > > + will be run from the region and that the memory is maintained as > > + read-only, executable during code execution. NOTE: This region must > > + be page aligned on start and end in order to properly allow > > + manipulation of the page attributes. > > + type: boolean > > + > > + label: > > + $ref: /schemas/types.yaml#/definitions/string > > Already has a type definition. OK Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/sram/sram.txt b/Documentation/devicetree/bindings/sram/sram.txt deleted file mode 100644 index e98908bd4227..000000000000 --- a/Documentation/devicetree/bindings/sram/sram.txt +++ /dev/null @@ -1,80 +0,0 @@ -Generic on-chip SRAM - -Simple IO memory regions to be managed by the genalloc API. - -Required properties: - -- compatible : mmio-sram or atmel,sama5d2-securam - -- reg : SRAM iomem address range - -Reserving sram areas: ---------------------- - -Each child of the sram node specifies a region of reserved memory. Each -child node should use a 'reg' property to specify a specific range of -reserved memory. - -Following the generic-names recommended practice, node names should -reflect the purpose of the node. Unit address (@<address>) should be -appended to the name. - -Required properties in the sram node: - -- #address-cells, #size-cells : should use the same values as the root node -- ranges : standard definition, should translate from local addresses - within the sram to bus addresses - -Optional properties in the sram node: - -- no-memory-wc : the flag indicating, that SRAM memory region has not to - be remapped as write combining. WC is used by default. - -Required properties in the area nodes: - -- reg : iomem address range, relative to the SRAM range - -Optional properties in the area nodes: - -- compatible : standard definition, should contain a vendor specific string - in the form <vendor>,[<device>-]<usage> -- pool : indicates that the particular reserved SRAM area is addressable - and in use by another device or devices -- export : indicates that the reserved SRAM area may be accessed outside - of the kernel, e.g. by bootloader or userspace -- protect-exec : Same as 'pool' above but with the additional - constraint that code wil be run from the region and - that the memory is maintained as read-only, executable - during code execution. NOTE: This region must be page - aligned on start and end in order to properly allow - manipulation of the page attributes. -- label : the name for the reserved partition, if omitted, the label - is taken from the node name excluding the unit address. -- clocks : a list of phandle and clock specifier pair that controls the - single SRAM clock. - -Example: - -sram: sram@5c000000 { - compatible = "mmio-sram"; - reg = <0x5c000000 0x40000>; /* 256 KiB SRAM at address 0x5c000000 */ - - #address-cells = <1>; - #size-cells = <1>; - ranges = <0 0x5c000000 0x40000>; - - smp-sram@100 { - compatible = "socvendor,smp-sram"; - reg = <0x100 0x50>; - }; - - device-sram@1000 { - reg = <0x1000 0x1000>; - pool; - }; - - exported@20000 { - reg = <0x20000 0x20000>; - export; - }; -}; diff --git a/Documentation/devicetree/bindings/sram/sram.yaml b/Documentation/devicetree/bindings/sram/sram.yaml new file mode 100644 index 000000000000..8d9d6ce494b2 --- /dev/null +++ b/Documentation/devicetree/bindings/sram/sram.yaml @@ -0,0 +1,138 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sram/sram.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic on-chip SRAM + +maintainers: + - FIXME <who@should.it.be> + +description: |+ + Simple IO memory regions to be managed by the genalloc API. + + Each child of the sram node specifies a region of reserved memory. Each + child node should use a 'reg' property to specify a specific range of + reserved memory. + + Following the generic-names recommended practice, node names should + reflect the purpose of the node. Unit address (@<address>) should be + appended to the name. + +properties: + $nodename: + pattern: "^sram(@.*)?" + + compatible: + items: + - enum: + - mmio-sram + - atmel,sama5d2-securam + + reg: + maxItems: 1 + + "#address-cells": + description: Should use the same values as the root node. + + "#size-cells": + description: Should use the same values as the root node. + + ranges: + description: + Should translate from local addresses within the sram to bus addresses. + + no-memory-wc: + description: + The flag indicating, that SRAM memory region has not to be remapped + as write combining. WC is used by default. + type: boolean + + # TODO: additionalProperties: false + +patternProperties: + "^([a-z]*-)?sram@[a-f0-9]$": + type: object + description: + Each child of the sram node specifies a region of reserved memory. + properties: + reg: + description: + IO mem address range, relative to the SRAM range. + + compatible: + $ref: /schemas/types.yaml#/definitions/string + description: + Should contain a vendor specific string in the form + <vendor>,[<device>-]<usage> + + pool: + description: + Indicates that the particular reserved SRAM area is addressable + and in use by another device or devices. + type: boolean + + export: + description: + Indicates that the reserved SRAM area may be accessed outside + of the kernel, e.g. by bootloader or userspace. + type: boolean + + protect-exec: + description: | + Same as 'pool' above but with the additional constraint that code + will be run from the region and that the memory is maintained as + read-only, executable during code execution. NOTE: This region must + be page aligned on start and end in order to properly allow + manipulation of the page attributes. + type: boolean + + label: + $ref: /schemas/types.yaml#/definitions/string + description: + The name for the reserved partition, if omitted, the label is taken + from the node name excluding the unit address. + + clocks: + description: + A list of phandle and clock specifier pair that controls the + single SRAM clock. + + # TODO: additionalProperties: false + + required: + - reg + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + - ranges + +examples: + - | + sram: sram@5c000000 { + compatible = "mmio-sram"; + reg = <0x5c000000 0x40000>; /* 256 KiB SRAM at address 0x5c000000 */ + + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x5c000000 0x40000>; + + smp-sram@100 { + compatible = "socvendor,smp-sram"; + reg = <0x100 0x50>; + }; + + device-sram@1000 { + reg = <0x1000 0x1000>; + pool; + }; + + exported@20000 { + reg = <0x20000 0x20000>; + export; + }; + };
Convert generic mmio-sram bindings to DT schema format using json-schema. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> --- Changes since v1: 1. Indent example with four spaces (more readable). --- .../devicetree/bindings/sram/sram.txt | 80 ---------- .../devicetree/bindings/sram/sram.yaml | 138 ++++++++++++++++++ 2 files changed, 138 insertions(+), 80 deletions(-) delete mode 100644 Documentation/devicetree/bindings/sram/sram.txt create mode 100644 Documentation/devicetree/bindings/sram/sram.yaml